from flask import g
from flask import request
from flask import session, jsonify

from info import redis_store
from info.models import User, News, Category
from info.modules.index import  index_blue
import logging
from flask import current_app,render_template
# 使用app,通过路由绑定一个视图函数
from info.utils.commons import user_login_data
from info.utils.response_code import RET

# 首页新闻列表
# 请求路径：/newslist
# 请求方式：Get
#　请求参数：cid,page,per_page
# 返回值：data数据
@index_blue.route('/newslist')
@user_login_data
def newsList():
    """
    1.获取参数
    2.参数类型转换
    3.分页查询
    4.获取到分页对象中的属性
    5.将对象列表转成字典列表
    6.携带数据，返回响应
    :return:
    """
    # 1.获取参数
    cid = request.args.get("cid","1")
    page = request.args.get("page","1")
    per_page = request.args.get("per_page","1")

    # 2.参数类型转换
    try:
        page = int(page)
        per_page = int(per_page)

    except Exception as e:
        page = 1
        per_page = 10
    # 3.分页查询
    try:
        """
        #判断新闻的分类是否为1
        if cid == "1":
            paginate = News.query.filter().order_by(News.create_time.desc()).paginate(page,per_page,False)
        else:
            paginate = News.query.filter(News.category_id == cid).order_by(News.create_time.desc()).paginate(page,per_page,False)
        """


        # 改装,判断新闻的分类是否为1
        # filters = ""
        # if cid != "1":
        #     filters = (News.category_id == cid)
        # paginate = News.query.filter(filters).order_by(News.create_time.desc()).paginate(page, per_page, False)

        filters = [News.status == 0]
        if cid != "1":
            filters.append(News.category_id == cid)
        paginate = News.query.filter(*filters).order_by(News.create_time.desc()).paginate(page,per_page,False)

    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.DBERR,errmsg="获取新闻失败")
    # 4.获取到分页对象中的属性
    totalPage = paginate.pages
    currentPage = paginate.page
    items = paginate.items
    # 5.将对象列表转成字典列表
    news_list = []
    for news in items:
        news_list.append(news.to_dict())
    # 6.携带数据，返回响应
    return jsonify(errno=RET.OK,errmsg="获取新闻成功",totalPage=totalPage,currentPage=currentPage,newsList=news_list)
@index_blue.route('/', methods=["GET","POST"])
@user_login_data
def show_index():
    # # 1.获取用户的登陆信息
    # user_id = session.get("user_id")
    # # 2.通过user_id取出用户对象
    # user = None
    # if user_id:
    #     try:
    #         user = User.query.get(user_id)
    #     except Exception as e:
    #         current_app.logger.error(e)
    # return render_template("news/index.html")
    # 3.查询热门新闻，根据点击量，查询前十条新闻
    try:
        news = News.query.order_by(News.clicks.desc()).limit(10).all()
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.DBERR,errmsg="获取新闻失败")
    # 4.将新闻对象列表，转成字典列表
    news_list = []
    for item in news:
        news_list.append(item.to_dict())

    # 5.查询所有的分类数据
    try:
        categories = Category.query.all()
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.DBERR,errmsg="获取分类失败")
    # 6.将分类的对象列表转成字典列表
    category_list = []
    for category in categories:
        category_list.append(category.to_dict())
    # 5.拼接用户数据，渲染页面
    data = {
        # 如果user有值返回左边的内容，否则返回右边的值
        "user_info":g.user.to_dict() if g.user else "",
        "news_list":news_list,
        "category_list":category_list

    }
    return render_template("news/index.html",data=data)
# 处理网站logo
@index_blue.route('/favicon.ico')
def get_web_logo():
    return current_app.send_static_file('news/favicon.ico')


# 统一的返回404页面
@index_blue.route("/404")
@user_login_data
def page_not_found():
    data = {
        "user_info":g.user.to_dict() if g.user else ""
    }
    return render_template("news/404.html",data=data)